Is it not? Is it not? Breadth of view, my dear Mr. Mac, is one of the essentials of our profession. The interplay of ideas and the oblique uses of knowledge are often of extraordinary interest.

Dear me, Watson, is it possible that you have not penetrated the fact that the case hangs upon the missing dumb-bell?

You know my powers, my dear Watson, and yet at the end of three months I was forced to confess that I had at last met an antagonist who was my intellectual equal. My horror at his crimes was lost in my admiration at his skill.

The Professor snorted like an angry buffalo. "You really touch the limit," said he. "You enlarge my view of the possible. Cerebral paresis! Mental inertia! Wonderful!"

The devil's agents may be of flesh and blood, may they not?

Unwelcome truths are not popular.